1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 453 · 40 questions

The trick (Reverse and subtract): Reverse the number and take the smaller number away from the bigger one. The answer is always one of 198, 297, 396, 495, 594, 693, 792, 891: middle digit 9, first and last digits adding to 9. Reverse that answer and add: you always get 1089.

1. 1.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
3. 3.198 + 891 =
4. 4.Do the 1089 trick with 911: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.Take 277. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
7. 7.Take 440. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Take 854. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Take 295. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
11. 11.495 + 594 =
12. 12.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
13. 13.594 + 495 =
14. 14.Do the 1089 trick with 670: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.693 + 396 =
16. 16.Take 992. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
18. 18.Take 886. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.792 + 297 =
20. 20.Take 951. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Take 900. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Do the 1089 trick with 517: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
24. 24.Take 669. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Do the 1089 trick with 133: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Take 420. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 200. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Do the 1089 trick with 267: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Do the 1089 trick with 449: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.396 + 693 =
31. 31.Take 941. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Do the 1089 trick with 850: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Do the 1089 trick with 550: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 288. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 452. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.297 + 792 =
37. 37.Take 749. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 588: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 880: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 167: reverse and subtract, then reverse that answer and add. What do you get?

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